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PHP File delete using unlink function

We can delete files by giving its URL or path in PHP by using unlink command. This command will work only if write permission is given to the folder or file. Without this the delete command will fail. Here is the command to delete the file.

unlink($path);

Related Tutorial
• Deleting all files of Directory

We can check the path by using file_exists function to know if file is available for deletion. Here $path is the relative path of the file calculated from the script execution. Here is an example of deleting file by using relative path

$path="images/all11.css";
if(unlink($path)) echo "Deleted file ";

We have used if condition to check whether the file delete command is successful or not. But the command below will not work.

$path="http://domainname/file/red.jpg";

if(unlink($path)) echo "Deleted file ";

The warning message will say unlink() [function.unlink]: HTTP does not allow unlinking.

We can suppress the warning message by adding a @ symbol before the unlink command .
Based on the success of the file delete command we can further execute our code by using if else code block.

$path="test.html";
if(@unlink($path)) {echo "Deleted file "; }
else{echo "File can't be deleted";}

PHP File Functions

PHP file handling functions
Reading from local and remote files by using fopen()
Writing to a file by fwrite() function
file_exists: Checking if file is present or not
filesize: getting size in bytes for a input file
unlink:Deleting file by using unlink function
Deleting all files present inside a directory
Downloading files using header control
File upload to server using PHP
File upload using PHP 5 and register_global off
Uploading More than one file to server
Displaying all files and directory of a folder
Getting the Present  file name running the  PHP script
pathinfo: getting all the details like dir name, file name , extension etc
Getting the last updated time of the file  in PHP
Displaying the last modification time of the file
Searching for text within a pair of tags of a html page
Listing All title tags inside a directory
Creating thumbnail images after uploading the file
Managing Maximum execution time of a php file

hariv21	31-03-2010
nice
php	29-09-2012
amazing tutorils.... thanks

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